Patent US3499425A successfully refreshed from Google Patents.
US3499425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: DEWEY E GOMMEL
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Filing: 1968-06-04
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Granted: 1970-03-10
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Expires: 1988-06-04
Abstract
No abstract record available.
Inventors
- 👤 Dewey E Gommel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:49
CPC Classifications
F; F02; F02B; F02B69/00; F02B69/06; F02B1/00; F02B25/00; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B2075/027; F02B2700/00; F02B2700/02; F02B2700/023; F02B2700/03; F02B2700/034
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US386211A
Cited
DE453536C
Cited
US898317A
Cited
US1008199A
Cited
US1172472A
Cited
US1598891A
Cited
US1572709A
Cited
US2791078A
Cited
US3195526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |